延安地区已往小麦品种工作,由于对品种組合在这一地势气候复杂地区的特性、作用认識不足,为了充分发揮某一良种的增产能力和便于推广、种子保純,一九五五、一九五六年分别在高原、丘陵区大面积推广了碧螞1号、烏克兰0246。碧螞1号在高原区的大川、塬地(少灾肥地),发揮了显著增产作用,至今这些地方还继續种植。但由于品种生育快耐寒力差,在一些易冻及山坡 In the past, the work of wheat varieties in Yan’an region was insufficient. Due to the lack of understanding of the features and functions of the breed combinations in the complex terrain and climate, in order to give full play to the yield-increasing ability and promotion of a certain breed, In 1956, respectively in the plateau, hilly area large area promotion Bi Ma 1, Ukraine 0246. Bi-ma 1 in the plateau area of ​​the Okawa, plateau (less fertile land), has played a significant role in increasing production, so far these areas also continue to grow. However, due to poor fast-growing variety of fertility poor, in some easy to freeze and hillsides